The principle used in radar is the same as that of Sonar. In radar we use radio waves ; whereas in sonar we use ?

Related Mcqs:

1. SONAR is based on the principle of___________?

   A. Echo
   B. reverberation
   C. resonance
   D. None of these

   Submitted by: Abid Otho

2. Sound waves are _________ waves.

   A. Transverse
   B. Electromagnetic
   C. Longitudinal
   D. None of these

3. P Waves are also said to be __________ waves?

   A. Push-pull
   B. Side-side
   C. Up-down
   D. None of the above

   Submitted by: Rashid Mehmood

4. Which layer of the atmosphere reflects radio waves back to the earth’s surface?

   A. Troposphere
   B. Stratosphere
   C. Ozone layer
   D. Ionosphere

   Submitted by: Aamir Hussain Laghari

5. In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ?

   A. Chemical Reaction
   B. Nuclear reaction
   C. Fission nuclear reaction
   D. Fusion nuclear reaction
   E. None of these

6. A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect?

   A. Current
   B. Voltage
   C. Nuclear Radiation
   D. power
   E. None of these

7. Which rays are trapped in our galaxy by magnetic waves?

   A. Alpha rays
   B. Gamma rays
   C. Cosmic rays
   D. None of these

   Submitted by: Malik Asghar Hussain

8. P-waves is a term associated with__________?

   A. Earthquakes
   B. Oceans
   C. Wind
   D. Rivers

   Submitted by: Asad Ullah Afridi

9. The process by which kidney stones are crushed with shock waves is called?

   A. Laparoscopy
   B. Dementia
   C. Lithotripsy
   D. None of these

   Submitted by: Mansoor Ahmed Suhag

10. Which of the following waves have smallest velocity in vacuum?

    A. Ultraviolet
    B. Sound
    C. Infra-Red
    D. Micro

    Submitted by: Malik Asghar Hussain